Linux tee command with examples
The tee command reads standard input (stdin) and writes the result to standard output (stdout) and one or more files simultaneously. It basically displays the command output on the terminal …
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How to modify an existing systemd unit file
In this example, we will show how to modify an existing unit file. There are three main directories where unit files are stored on the system but the ‘/etc/systemd/system/’ directory …
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How to create a systemd service unit file in Linux
systemd is a system and service manager for Linux operating systems. When you install any application from a repository, it will drop a service unit file into the systemd directory …
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How to manage systemd units with systemctl
In this article, we’ll show you how to manage the systemd units using systemctl command. What’s systemd? systemd is a system and service manager for modern Linux operating systems, which …
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How to monitor Socket connections using ss command
ss (socket statistics) is a command line tool that monitors socket connections and displays the socket statistics of the Linux system. It can display stats for PACKET sockets, TCP sockets, …
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How to install Multimedia Codecs in Linux
By default, the Linux system cannot play most video files that are in encrypted formats (proprietary media formats) if you do not have the required Media Codecs installed on your …
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How to configure firewalld rules in Linux
The firewall is essential for controlling the flow of network traffic in and out of the Linux server. It enables users to control incoming network traffic on host machines by …
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How to use journalctl to analyze logs in Linux
systemd is the default system manager in most of the major Linux distributions, which comes with a new logging daemon called ‘journald’. For many years, system and kernel logs in …
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6 best tools to monitor disk IO performance in Linux
Disk IO issues (input/output) are one of the most common causes of poor performance on Linux system. This occurs when applications try to quickly read or write too much data …
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How to lock & unlock multiple users in Linux
‘usermod’ & ‘passwd’ commands are used to lock or unlock one user account at a time, but you may need to write some small shell scripts to perform this action …
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